How to focus the Ray5 miniS
Ray5 MiniS

How to focus the Ray5 miniS

November 8, 2025
Teilen Post Stift Email

Proper focus is one of the most important steps when using the Ray5 MiniS laser engraver. Correct focusing helps produce cleaner engraving lines, sharper details, and more consistent cutting results.

Table of Contents

  • What This Guide Covers
  • Why This Process Matters
  • Before You Start
  • Step-by-Step Tutorial
  • Common Problems and Solutions
  • Tips for Better Results
  • Frequently Asked Questions
  • Final Thoughts

What This Guide Covers

This tutorial explains how to correctly focus the Ray5 MiniS laser module using the official 2 mm focus block.

Quick Answer

To focus the Ray5 MiniS:

  1. Place the 2 mm focus block on the engraving surface.
  2. Loosen the M3*14 handle screw.
  3. Move the laser module downward until the bottom of the light shield touches the surface of the focus block.
  4. Tighten the M3*14 handle screw.

This process sets the proper focal distance between the laser module and the material surface.

Why This Process Matters

Laser focus directly affects engraving and cutting quality. When the focal distance is correct, the laser beam becomes concentrated into a smaller and more powerful spot.

Correct focus helps improve:

  • Engraving sharpness
  • Line precision
  • Cutting performance
  • Edge cleanliness
  • Material consistency

Incorrect focus may cause:

  • Blurry engraving
  • Weak laser power
  • Incomplete cuts
  • Burn marks
  • Uneven engraving depth

According to LONGER troubleshooting documentation, incorrect focus is one of the most common reasons for unclear engraving results on the Ray5 MiniS.

Before You Start

Before adjusting the focus, prepare your machine and workspace properly.

Requirements

You will need:

  • Ray5 MiniS laser engraver
  • 2 mm focus block
  • Material or engraving surface
  • Proper safety glasses
  • Stable work surface

Follow official machine specifications or instructions.

Precautions

Before focusing the machine:

  • Ensure the machine is powered safely and positioned securely.
  • Keep the work area clean and free from reflective materials.
  • Never look directly at the laser beam.
  • Make sure the engraving surface is level.
  • Avoid touching the laser lens unnecessarily.
  • Do not force the laser module during adjustment.

If the laser window lens becomes dirty, engraving quality may decrease. LONGER recommends using lens cleaning paper or a dust-free cloth soaked in alcohol for gentle cleaning.

Step-by-Step Tutorial

Step 1: Place the 2 mm Focus Block on the Engraving Surface

Action

Place the 2 mm focus block directly on the engraving surface underneath the laser module.

Expected Result

The focus block creates the correct spacing reference between the laser module and the material surface.

Important Notes

  • Ensure the focus block sits flat on the surface.
  • Make sure the engraving material is positioned correctly before focusing.
  • An uneven material surface can affect focus accuracy.

Step 2: Loosen the M3*14 Handle Screw

Action

Loosen the M3*14 handle screw on the laser module.

Expected Result

The laser module should move freely up and down for adjustment.

Important Notes

  • Loosen the screw only enough to allow movement.
  • Do not completely remove the screw.
  • Support the laser module carefully while adjusting.

Step 3: Move the Laser Module Downward

Action

Move the laser module downward until the bottom of the light shield touches the surface of the focus block.

Expected Result

The laser module reaches the correct focal height.

Important Notes

  • The bottom of the light shield should lightly touch the focus block surface.
  • Do not press the laser module downward with force.
  • Proper positioning is important for achieving a sharp laser spot.

Step 4: Tighten the M3*14 Handle Screw

Action

Tighten the M3*14 handle screw to secure the laser module in position.

Expected Result

The laser module remains fixed at the correct focal distance.

Important Notes

  • Ensure the module does not move while tightening.
  • Tighten securely, but avoid excessive force.
  • Recheck alignment after tightening if necessary.

 

Common Problems and Solutions

Problem Possible Cause Solution
Engraving looks blurry Incorrect focus Re-adjust focus using the 2 mm focus block
Laser appears weak Incorrect focal distance Repeat the focusing procedure carefully
Uneven engraving depth Material surface not level Ensure the material is flat before focusing
Burn marks around engraving Laser beam not concentrated properly Verify focus adjustment
Incomplete cuts Focus height incorrect Re-focus the laser module
Poor engraving clarity Dirty laser window lens Clean the lens carefully with alcohol and lint-free cloth
Engraving output inconsistent Incorrect software settings Check S-value MAX and engraving parameters
Soft limit alarms during positioning Manual movement mismatch Avoid manually moving the laser during operation

LONGER documentation recommends checking focus first whenever engraving quality becomes unclear.

Tips for Better Results

Use the Actual Engraving Material During Focus

Different material thicknesses may slightly affect the focal distance. Focusing directly on the actual material helps improve accuracy.

Recheck Focus After Material Changes

If you switch to thicker or thinner materials, repeat the focusing process before engraving.

Keep the Lens Clean

Dust, smoke residue, and debris on the laser window lens can reduce engraving quality.

LONGER recommends:

  • Lens cleaning paper
  • Dust-free cloth
  • Small amount of alcohol

Avoid applying excessive pressure during cleaning.

Verify Software Settings

If engraving quality remains poor after focusing:

  • Check whether the S-value MAX is 1000 in LightBurn.
  • Confirm engraving speed and power settings.
  • Ensure constant power mode is enabled when required.

Avoid Manual Position Changes During Engraving

Manually moving the laser position may trigger alarms or positioning issues on the Ray5 MiniS.

Frequently Asked Questions

What is the purpose of the 2 mm focus block?

The 2 mm focus block sets the correct focal distance between the laser module and the engraving surface for accurate laser performance.

Why is my Ray5 MiniS engraving blurry?

Blurry engraving is commonly caused by incorrect focus, incorrect software settings, dirty lenses, or improper engraving parameters.

Do I need to refocus every time I change materials?

Yes. Different material thicknesses can change the focal distance, so refocusing is recommended.

Can incorrect focus damage engraving quality?

Yes. Incorrect focus may cause weak engraving, excessive burning, incomplete cuts, or poor detail quality.

What should touch the focus block during adjustment?

The bottom of the light shield should touch the surface of the focus block during focusing.

How tight should the M3*14 handle screw be?

Tighten the screw securely enough to hold the laser module firmly in place without excessive force.

What should I do if engraving still looks unclear after focusing?

Check:

  • S-value MAX settings
  • Engraving parameters
  • Constant power mode
  • Lens cleanliness

Follow official machine specifications or instructions.

Can a dirty lens affect focus performance?

Yes. A contaminated laser window lens can reduce laser power and engraving clarity.

Final Thoughts

Correctly focusing the Ray5 MiniS is essential for achieving clean engraving lines, accurate detail, and reliable cutting performance. By using the official 2 mm focus block and following the proper adjustment procedure, users can improve engraving consistency and reduce common quality problems.

Regular focus checks, proper maintenance, and correct software settings will help keep the Ray5 MiniS operating at its best for both beginners and experienced users.